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June 28th, 2026 :: 7:10 pm CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated June 28th at 5:54 pm 
Temperature:88°F Dew Point:75°F
Barometer:29.89 inHg Wind:N 19 Mph
Humidity:66.4% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jun 28th
Monday
Jun 29th
Tuesday
Jun 30th
Wednesday
Jul 1st
Thursday
Jul 2nd
Mostly Sunny Mostly Sunny Mostly Sunny Sunny Mostly Sunny
87°F
87°F
73°F
91°F
73°F
90°F
74°F
91°F
69°F
 
 Decatur Detailed Weather Forecast  
 
Sunday, June 28th, 2026
Evening Temperature: 80°F
Clear. Chance of a thunderstorm.
Monday, June 29th, 2026
Overnight Temperature: 74°F
Mostly clear. Chance of a thunderstorm.
Morning Temperature: 79°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 87°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy at times.
Evening Temperature: 81°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Tuesday, June 30th, 2026
Overnight Temperature: 74°F
Clear. Chance of a thunderstorm.
Morning Temperature: 79°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 90°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 82°F
Clear. Chance of a thunderstorm.
Wednesday, July 1st, 2026
Overnight Temperature: 75°F
Clear. Chance of a thunderstorm.
Morning Temperature: 80°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 89°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 83°F
Clear. Chance of a thunderstorm.
Thursday, July 2nd, 2026
Overnight Temperature: 77°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Morning Temperature: 82°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 91°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 77°F
Clear with cloudy periods with a chance of showers or thundershowers.
Friday, July 3rd, 2026
Overnight Temperature: 70°F
Clear with cloudy periods with a chance of showers.
Morning Temperature: 77°F
A mix of cloud and sun. Chance of a thunderstorm.
Afternoon Temperature: 86°F
Mostly sunny with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 80°F
Mostly clear with a chance of showers or thundershowers.
Saturday, July 4th, 2026
Overnight Temperature: 75°F
Mostly clear. Chance of a thunderstorm.
Morning Temperature: 80°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 90°F
Sunny with a chance of showers or thundershowers.
Evening Temperature: 83°F
Clear. Chance of a thunderstorm.
Sunday, July 5th, 2026
Overnight Temperature: 76°F
Clear. Chance of a thunderstorm.
Morning Temperature: 80°F
Mostly sunny with a chance of showers or thundershowers.
Afternoon Temperature: 89°F
Mostly sunny with a chance of showers or thundershowers.
Evening Temperature: 82°F
Mostly clear. Chance of a thunderstorm.
Monday, July 6th, 2026
Overnight Temperature: 74°F
Mostly clear with showers likely. Chance of a thunderstorm.
Morning Temperature: 80°F
Sunny with cloudy periods with a chance of showers or thundershowers.
Afternoon Temperature: 89°F
Mostly sunny with a chance of showers or thundershowers.
Evening Temperature: 78°F
Mostly clear with showers likely. Chance of a thunderstorm.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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